based on D&D 5th Edition
Cloud Giant
Huge  Giant , Lawful Good,Neutral Evil

Armor Class 14  (natural)
Hit Points 200  (16d12+96)
Speed 40 ft. , fly 40 ft. , swim 20 ft.

27  (+8) 10  (0) 22  (+6) 12  (+1) 16  (+3) 16  (+3)
Saving Throws Con +9, Wis +7, Cha +7
Senses passive Perception 17
Languages Common, Giant
Challenge 9  (0 XP)
Innate Spellcasting. At will: fog cloud. (3/day) fly, misty step. (1/day) control weather, gaseous form.
Multiattack. make two morningstar attacks
Morningstar. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 21 (3d8 +8) piercing damage.
Rock. Ranged Weapon Attack: +12 to hit, range 60/240 ft., one target. Hit: 30 (4d10 +8) bludgeoning damage.
Fog Cloud. Create a cloud of radius 3 that blocks line of sight.
Misty Step. 3 uses Teleport 6 as a bonus action.DC 16 save
Fly. 3 uses Target creature gains flight until end of battle. Flight speed of 12.DC 16 save
Gaseous Form. 1 uses Transform target into misty cloud. Target gains resistance to all non-magical damage. Target gains flight speed of 2. Target does not need to squeeze. Target can not attack or cast spells or manipulate objects. Target has advantage on Strength, Dexterity, and Constitution saves.DC 16 save